/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlets;

import beans.Product;
import beans.ShoppingCart;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author havn
 */
public class CartServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    private ShoppingCart cart;

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        HttpSession session = request.getSession();

        if (session.getAttribute("ShoppingCart") == null) {
            cart = new ShoppingCart();
            session.setAttribute("ShoppingCart", cart);
        } else {
            cart = (ShoppingCart) session.getAttribute("ShoppingCart");
        }

        int id = Integer.valueOf(request.getParameter("id"));
        String name = request.getParameter("name");
        String image = request.getParameter("image");
        int price = Integer.valueOf(request.getParameter("price"));
        Product p = new Product();
        p.setId(id);
        p.setImage(image);
        p.setName(name);
        p.setPrice(price);
        cart.addProduct(p);
        try {
            out.println("Items in Cart : " + cart.getCount());
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
